Science

• Digestive system's main function is to break down food to provide energy in the body
• Stomach contains gastric juices that break down food
• Absorption happens in the small intestine
• Diarrhea may result to dehydration
• Cells regenerate and divide
• Nucleus is the control center of all the activities of the cell
• DNA is the universal blueprint of life
• Mitosis occurs in body cells like skin cells
• Meiosis occurs in Reproductive cells like egg cells
• Gregor Johann Mendel developed the laws of inheritance
• Mendel stated that physical traits are inherited as "particles" but we're actually chromosomes & DNA
• Trait is any characteristic that can be passed from parent to offspring
• Heredity is passing of traits from parent to offspring
• Genetics is the study of heredity
• Monohybrid cross is a cross involving a single trait
• Dihybrid cross is a cross involving two traits
• The Punnett Square is used to help solve genetic problems
• Alleles is the two forms of a gene
• Dominant is stronger of two genes expressed in the hybrid (Capital letter)
• Recessive is a gene that shows up less often in a cross (Lowercase letter)
• Genotype is the gene combination for a trait
• Phenotype is the physical feature resulting from a genotype
• Homozygous genotype is a gene combination involving two dominant or two recessive genes
• Homozygous genotype is also called pure
• Heterozygous genotype is a gene combination of one dominant and one recessive allele
• Heterozygous genotype is also called hybrid
• Dihybrid cross is the inheritance of two traits "law of independent assortment"
• Each pair of alleles segregates independently during gamete formation
• Biodiversity is variety and diversity of life forms (number of kinds) in an area
• Biodiversity increases the stability of an ecosystem and contributes to the health of the biosphere
• Biodiversity is the focus of conservation
• Extinction is a process that happens when an entire species permanently disappear from the biosphere due to the death of the species last member
• A healthy ecosystem supports high biological diversity
• A stressed ecosystem may not have the capacity to support high biological diversity
• Ecological/ecosystem has different habitats, niches, species interactions
• Species has different kinds of organisms, relationship among species
• Genetic has different genes & combination of genes within populations
• Ecosystem diversity is the collection of all plants and animals within a particular area, each differing and species composition, physical structure and function
• Ecosystem diversity is the variety of ecosystems that are present in the biosphere
• Ecosystem diversity is made up of interacting populations and abiotic factors that support them